What causes Carb diaphragms crack and tear with age on the Yamaha Yzf1000r Thunderace?

Rough idle, hesitation, pull carbs and inspect diaphragms Estimated fix cost: $80-$200

What causes Rectifier/regulator failure kills charging system on the Yamaha Yzf1000r Thunderace?

Check battery voltage at idle, look for burnt connector Estimated fix cost: $60-$150

Oil streaks on lower legs, check fork action for binding Estimated fix cost: $100-$250

Squeeze hoses for cracks, check coolant temp gauge behavior Estimated fix cost: $50-$120

Known issues to inspect before buying a used Yamaha Yzf1000r Thunderace. What to check and how much repairs cost.

MODERATE

Rough idle, hesitation, pull carbs and inspect diaphragms

Fix cost: $80-$200

SERIOUS

Check battery voltage at idle, look for burnt connector

Fix cost: $60-$150

MODERATE

Oil streaks on lower legs, check fork action for binding

Fix cost: $100-$250

MODERATE

Squeeze hoses for cracks, check coolant temp gauge behavior

Fix cost: $50-$120

☐Cold start test, listen for top-end noise

☐Check service history and valve clearance records

☐Inspect frame for crash damage or repairs

☐Test all electrics including dash and lights

Solid and durable if regularly maintained and serviced